Alternating Wolff-Parkinson-White syndrome associated with attack of angina.

abstract：:Postoperative atrial fibrillation is common after cardiac surgery. Prediction of which patients will develop postoperative atrial fibrillation would be clinically useful. Increased P-wave duration, suggesting atrial conduction delay and measured from preoperative electrocardiograms, predicts postoperative atrial fibri...

journal_title：Journal of electrocardiology

authors： Kalus JS,Kluger J,Caron MF,Liu X,Humphrey C,White CM

更新日期：2004-04-01 00:00:00

abstract：:Information from 24-hour monitoring with on-line vectorcardiography, starting immediately after admission, was compared with results from a predischarge exercise test 3-13 days after admission. A total of 169 patients with acute myocardial infarction and 73 patients with unstable angina pectoris were investigated. Pat...

journal_title：Journal of electrocardiology

authors： Lundin P,Jensen J,Rehnqvist N,Eriksson SV

更新日期：1995-10-01 00:00:00

abstract：:15-Year-old man's cardiac event monitor showed an episode of wide complex tachycardia which transitioned into narrow complex tachycardia. The tachycardia cycle length was shorter during wide complex tachycardia compared with narrow complex tachycardia. He underwent electrophysiology study in which an orthodromic atrio...

journal_title：Journal of electrocardiology

authors： Tan VH,Yeo C,Wong K

更新日期：2020-01-01 00:00:00

abstract：:We hypothesized that if the right atrial circuit during isthmus dependent atrial flutter provides the dominant contribution to the surface electrocardiogram (ECG), the three-dimensional vector loop of the flutter waves would primarily be in a plane approximately parallel to the tricuspid ring. Twenty vectorcardiograms...

journal_title：Journal of electrocardiology

authors： Ng J,Sahakian AV,Fisher WG,Swiryn S

更新日期：2003-01-01 00:00:00

abstract：BACKGROUND:Many variants of the spatial QRS-T angle (QRS-Ta) are in use. We aimed to identify the best QRS-Ta for all-cause mortality prediction among different variants. METHODS:6667 individuals from the Inter99 General Population Study were followed for a median of 12.7 years. Vectorcardiograms were calculated using...

journal_title：Journal of electrocardiology

authors： Kück K,Isaksen JL,Graff C,Skaaby T,Linneberg A,Hansen T,Kanters JK

更新日期：2018-01-01 00:00:00

abstract：:The authors investigated the usefulness of the Karhunen-Loeve technique applied to body surface maps to study regional cardiac excitation. Eigenvectors were derived from the body surface potential maps of 120 healthy adults using the Karhunen-Loeve expansion theory. Then, in the maps of various types of ventricular hy...

journal_title：Journal of electrocardiology

authors： Watabe S,Hayashi H,Yamada Y,Miyaji K,Yabe S,Sotobata I,Iwata A,Suzumura N

更新日期：1990-01-01 00:00:00

abstract：BACKGROUND:Electrocardiogram (ECG) screening in athletes enhances the detection of conditions associated with sudden cardiac death (SCD), but concerns remain for false positive results when conducted outside of specialized centers. This study compared ECG interpretation in college athletes between local physicians and ...

journal_title：Journal of electrocardiology

authors： Petek BJ,Drezner JA,Prutkin JM,Owens DS,Tran T,Harmon KG

更新日期：2020-01-01 00:00:00

abstract：:Precise recording of the standard 12-lead electrocardiogram (ECG) is technically time consuming. Placing limb leads on the torso has the major advantages of ease of use, increased speed of application, and decreased artifact. This modified ECG frequently substitutes for the standard 12-lead ECG in intensive care units...

journal_title：Journal of electrocardiology

authors： Toosi MS,Sochanski MT

更新日期：2008-05-01 00:00:00

abstract：:A 63 year old man with angina pectoris was found to have frequent extrasystoles separated by odd as well as even numbers of conducted sinus beats. Analysis of 935 conducted sinus beats showed that premature ventricular beats without interpolation were separated by odd numbers of conducted sinus beats in 117 sequences ...

journal_title：Journal of electrocardiology

authors： Bissett JK,Watson JW,Wanta-Matthews M,Ozemek H

更新日期：1982-01-01 00:00:00

abstract：:The authors focus on computational separation of the individual patterns of occlusion of the major segments of the right coronary artery. The raw patterns of occlusion throughout 15 standard subdivisions of the coronary arterial tree and body surface isoarea maps for 8 consecutive 10-msec intervals of QRS were examine...

journal_title：Journal of electrocardiology

authors： Horan LG,Sridharan MR,Flowers NC,Killam HA

更新日期：1989-01-01 00:00:00

abstract：:Magnesium ion infusion has been reported for treatment of hypomagnesemia often associated with myocardial infarction and with surgeries involving cardiopulmonary bypass (CPB). Magnesium infusion before CPB has been reported to adversely affect the ability to defibrillate after CPB. However, there are also reports of m...

journal_title：Journal of electrocardiology

authors： McDaniel WC,Curtis JJ,Walls JT,Madsen RW

更新日期：1998-04-01 00:00:00

abstract：BACKGROUND:Several studies have documented the prognostic significance of the signal-averaged electrocardiogram (SAECG) both after myocardial infarction and nonischemic cardiomyopathy. However, whether the SAECG can identify patients with implantable cardioverter-defibrillator (ICD) who receive appropriate therapy has ...

journal_title：Journal of electrocardiology

authors： Haghjoo M,Arya A,Parsaie M,Dehghani MR,Sadr-Ameli MA

更新日期：2006-04-01 00:00:00

abstract：BACKGROUND:ECG cable interchange can generate erroneous diagnoses. For algorithms detecting ECG cable interchange, high specificity is required to maintain a low total false positive rate because the prevalence of interchange is low. In this study, we propose and evaluate an improved algorithm for automatic detection a...

journal_title：Journal of electrocardiology

authors： Han C,Gregg RE,Feild DQ,Babaeizadeh S

更新日期：2014-11-01 00:00:00

abstract：:The modified Sgarbossa criteria have been established to aid in the diagnosis of ST-elevation myocardial infarction in patients with left bundle branch block. Thus far, the sensitivities and specificities of the Sgarbossa signs have only been evaluated retrospectively in cohorts of patients with and without occlusive ...

journal_title：Journal of electrocardiology

authors： Cravens MG,Ali SF,Gibbs MA,Littmann L

更新日期：2020-01-01 00:00:00

abstract：:Placement of the precordial electrodes for recording a 12-lead electrocardiogram (ECG) is subject to variation. Previous research has shown that displacement, especially in the longitudinal direction, can lead to changes in diagnosis. In practice, both the displacement and the effects of displacement on an individual ...

journal_title：Journal of electrocardiology

authors： Schijvenaars RJ,Kors JA,van Herpen G,van Bemmel JH

更新日期：1996-01-01 00:00:00

abstract：:The myocardial electrical conduction is significantly influenced by the sympathetic and parasympathetic nervous systems. Hypervagotonia refers to increased vagal tone leading to sinus bradycardia, sinus pause, or any degree of atrioventricular (AV) block. There are many clinical, electrocardiographic, and electrophysi...

journal_title：Journal of electrocardiology

authors： Oghlakian G,Correia J

更新日期：2009-11-01 00:00:00

abstract：:In a patient with the sick sinus syndrome and near syncope a prolonged sinus pause was documented and reproduced thereafter during sustained deep inspiration. Administration of intravenous atropine abolished this phenomenon, most probably indicating a hyperresponsiveness of the sinus node and AV junction to a vagotoni...

journal_title：Journal of electrocardiology

authors： Strasberg B,Sclarovsky S,Arditti A,Lewin RF,Agmon J

更新日期：1986-01-01 00:00:00

abstract：:Body surface potential mapping is superior to 12-lead electrocardiogram in detection of acute and old myocardial infarctions. We examined the capability of the ST-T integral and T wave to detect exercise-induced ischemia in body surface potential mapping. Body surface potential mapping with 123 channels was recorded i...

journal_title：Journal of electrocardiology

authors： Hänninen H,Takala P,Rantonen J,Mäkijärvi M,Virtanen K,Nenonen J,Katila T,Toivonen L

更新日期：2003-04-01 00:00:00

abstract：BACKGROUND:Isolation of infract related artery and timely revascularisation remains vital in the setting of primary percutaneous coronary intervention. OBJECTIVES:To analyse the predictive value of ST-T changes in lead aVR in inferior myocardial infarction in terms of prognosis and timely risk stratification. METHODS...

journal_title：Journal of electrocardiology

authors： Gaballa A,Farid W,Al-Kersh A,Rajan R,Al Jarallah M

更新日期：2019-01-01 00:00:00

abstract：BACKGROUND:In STEMI, grade-3 ischemia (G3) on admission ECG predicts larger infarct size (IS) than grade-2 (G2). We evaluated whether pre-hospital G3 and its temporal behavior are associated with IS and salvage after pPCI. METHODS:In 401 STEMI patients, pre-hospital and pre-PCI ECGs were classified as G3 or G2. IS was...

journal_title：Journal of electrocardiology

authors： Ringborn M,Birnbaum Y,Nielsen SS,Kaltoft AK,Bøtker HE,Pahlm O,Wagner GS,Platonov PG,Terkelsen CJ

更新日期：2014-07-01 00:00:00

abstract：:In order to differentiate posterior (posterolateral) myocardial infarction (PMI) from the anterior shift of the QRS loop in "normal variant" cases using a vectorcardiogram, the T loop as well as the QRS loop in the transverse plane (TP) were analyzed in 34 elderly Japanese males with angiographically-proven PMI and in...

journal_title：Journal of electrocardiology

authors： Takatsu F,Osugi J,Nagaya T,Uwatoko M,Watabe S,Ishikawa H

更新日期：1986-04-01 00:00:00

abstract：:Intracellular and extracellular recording techniques were used to study triggered activity in tissues isolated from the inferior right atrium of the dog. In the presence of norepinephrine (greater than 10(-7) M) single stimuli or short rapid pacing elicited action potentials with delayed after-depolarizations, leading...

journal_title：Journal of electrocardiology

authors： Lipsius SL

更新日期：1987-01-01 00:00:00

abstract：:Under hypoxic (95% N2 + 5% CO2) perfusion, electrophysiological effects of L-carnitine on canine papillary muscles were studied using standard microelectrode techniques. During hypoxic perfusion for 60 min, resting membrane potential (RMP), action potential amplitude (APA) and maximum upstroke velocity of phase 0 were...

journal_title：Journal of electrocardiology

authors： Hayashi H,Suzuki Y,Abe M,Nishihara K,Masumura Y,Kamikawa T,Kobayashi A,Yamazaki N

更新日期：1984-01-01 00:00:00

abstract：:A 53-year-old patient had a complex ventricular arrhythmia, which most likely was an intermittent pure (nonmodulated) parasystole, due to protection limited to the first part of the cycle coexisting with exit block. However, other interpretations of the observations were possible. Foremost among these was modulated pa...

journal_title：Journal of electrocardiology

authors： Castellanos A,Moleiro F,Guerrero J,Awaad MI,Myerburg RJ

更新日期：1997-10-01 00:00:00

abstract：:The electrophysiologic actions of epinephrine (10(-9) M, 10(-8) M, and 10(-7) M) were evaluated in canine Purkinje fibers pretreated with the class III antiarrhythmic drugs clofilium (10(-7) M) or d,l-sotalol (10(-6) M). Clofilium and d,l-sotalol prolonged action potential duration at 50% and 90% of repolarization wit...

journal_title：Journal of electrocardiology

authors： Patterson E,Scherlag BJ,Szabo B,Lazzara R

更新日期：1997-07-01 00:00:00

abstract：:Normal pacemaker and defibrillator function can occasionally mimic device malfunction. A thorough understanding of timing cycles and familiarity with company-specific pacing algorithms can often avoid unnecessary confusion. ...

journal_title：Journal of electrocardiology

authors： Ortman M

更新日期：2012-11-01 00:00:00

abstract：:The purpose of this experiment is to study the possibility of intra-QRS high-frequency electrocardiographic (HFECG) changes for the evaluation of and recovery from myocardial ischemia in both the time-domain and spectral-turbulence analyses on the signal-averaged ECG using the Holter ECG monitoring (Holter SAECG) syst...

journal_title：Journal of electrocardiology

authors： Yakubo S,Ozawa Y,Komaki K

更新日期：1995-01-01 00:00:00

abstract：:Eight sets of electrocardiographic (ECG) criteria for the localization of accessory conduction pathway (ACP) were evaluated on 182 patients with a single ACP. The Rosenbaum criteria identified 78.6% of the left-sided and 94.0% of the right-sided ACPs. Four of the other seven sets of criteria demonstrated a sensitivity...

journal_title：Journal of electrocardiology

authors： Yuan S,Iwa T,Tsubota M,Bando H

更新日期：1992-07-01 00:00:00

abstract：:Time course evolution of R, Q, T and ST components of the electrocardiogram during the first 12 hours of an acute myocardial infarction was studied. A comparison between anterior-extensive and anteroseptal wall infarctions (anterior group), and inferior-extensive and inferior wall infarction (inferior group) showed ap...

journal_title：Journal of electrocardiology

authors： Klainman E,Sclarovsky S,Lewin RF,Topaz O,Farbstein H,Pinchas A,Fohoriles L,Agmon J

更新日期：1987-04-01 00:00:00

abstract：:The authors present a patient who initially underwent anterior approach atrioventricular (AV) nodal modification for treatment of typical AV junctional reentrant tachycardia (AVJRT) and subsequently developed clinical episodes of a previously undocumented type of supraventricular tachycardia. Findings during electroph...

journal_title：Journal of electrocardiology

authors： Goldberger J,Ehlert F,Baerman J,Kadish A

更新日期：1994-01-01 00:00:00